116
FNCA52 TJSJ 050915 CCA
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO...CORRECTED
NATIONAL WEATHER SERVICE SAN JUAN PR
515 AM AST TUE MAY 5 2026
DISCUSSION
A SLIGHT INCREASE IN MOISTURE TODAY MAY PREVENT RH VALUES TO DROP
AS LOW AS YESTERDAY, REMAINING ABOVE CRITICAL LEVELS. HOWEVER,
ANY SHOWER ACTIVITY TODAY IS EXPECTED TO DEVELOP NORTH OF THE
SOUTHERN COASTAL PLAINS. BREEZY CONDITIONS WILL PERSISTS, BUT
GIVEN THE INCREASING MOISTURE, THE FIRE DANGER RISK EXPECTED TO BE
LOW, ALTHOUGH LOCALIZED AREAS MAY OBSERVE SOME ACTIVITY AS
ELEVATED KBDI IN CABO ROJO AND LOW 7-DAY PERCENT OF NORMAL
RAINFALL PERSIST ACROSS SOUTHEASTERN COASTAL PLAINS. WE WILL
CONTINUE TO MONITOR WEATHER CONDITIONS THROUGHOUT THE DAY.
PRZ014-052000-
SOUTHEAST COASTAL PLAINS-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 20
TEMP (24H TREND) 89 (+1) 73 (-2) 89
RH % (24H TREND) 55 (-1) 87 (0) 50
WIND 20FT/EARLY(MPH) E 11 E 9 E 12
WIND 20FT/LATE(MPH) SE 11 E 8 SE 12
MIXING HGT(FT-AGL/MSL)4350 4870
TRANSPORT WND (MPH) SE 15 E 14
VENT RATE (KT-FT) 56550 58440
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-052000-
SOUTHERN HILLS-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 10 10
TEMP (24H TREND) 86 (+3) 70 (-3) 87
RH % (24H TREND) 64 (-1) 96 (+3) 61
WIND 20FT/EARLY(MPH) SE 11 SE 9 E 12
WIND 20FT/LATE(MPH) SE 11 E 9 SE 12
MIXING HGT(FT-AGL/MSL)4880 5280
TRANSPORT WND (MPH) SE 15 E 13
VENT RATE (KT-FT) 63440 58080
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-052000-
NORTH COASTAL PLAINS-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 10
TEMP (24H TREND) 91 (+1) 71 (-3) 90
RH % (24H TREND) 59 (+1) 96 (0) 57
WIND 20FT/EARLY(MPH) SE 13 SE 10 E 12
WIND 20FT/LATE(MPH) E 13 SE 9 E 17
MIXING HGT(FT-AGL/MSL)4770 5130
TRANSPORT WND (MPH) E 13 E 13
VENT RATE (KT-FT) 52470 56430
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-052000-
NORTHERN HILLS-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 0 30
TEMP (24H TREND) 90 (+1) 69 (-3) 89
RH % (24H TREND) 61 (+5) 96 (-1) 59
WIND 20FT/EARLY(MPH) SE 10 SE 8 E 11
WIND 20FT/LATE(MPH) SE 11 SE 5 E 13
MIXING HGT(FT-AGL/MSL)5090 5900
TRANSPORT WND (MPH) SE 9 E 9
VENT RATE (KT-FT) 40720 47200
DISPERSION 5 5
DSI 5 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-052000-
WEST COAST-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 40 0 10
TEMP (24H TREND) 91 (+1) 73 (-1) 91
RH % (24H TREND) 61 (+2) 95 (0) 59
WIND 20FT/EARLY(MPH) SE 12 SE 11 E 13
WIND 20FT/LATE(MPH) SE 11 E 11 E 13
MIXING HGT(FT-AGL/MSL)4710 5120
TRANSPORT WND (MPH) SE 13 SE 13
VENT RATE (KT-FT) 51810 56320
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-052000-
EASTERN INTERIOR-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 20
TEMP (24H TREND) 87 (+1) 71 (-3) 88
RH % (24H TREND) 64 (0) 97 (+2) 61
WIND 20FT/EARLY(MPH) SE 13 SE 11 E 11
WIND 20FT/LATE(MPH) SE 13 SE 11 SE 12
MIXING HGT(FT-AGL/MSL)5230 5720
TRANSPORT WND (MPH) SE 16 SE 13
VENT RATE (KT-FT) 73220 62920
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-052000-
LUQUILLO MOUNTAIN RANGE-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 50 20
TEMP (24H TREND) 83 (+3) 70 (-3) 83
RH % (24H TREND) 70 (-3) 99 (+3) 66
WIND 20FT/EARLY(MPH) SE 12 SE 9 E 10
WIND 20FT/LATE(MPH) SE 12 SE 9 SE 11
MIXING HGT(FT-AGL/MSL)4230 4600
TRANSPORT WND (MPH) SE 16 SE 14
VENT RATE (KT-FT) 59220 55200
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-052000-
CENTRAL MOUNTAIN RANGE-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 0 10
TEMP (24H TREND) 87 (+4) 67 (-3) 86
RH % (24H TREND) 63 (-1) 98 (+2) 61
WIND 20FT/EARLY(MPH) SE 9 SE 5 E 10
WIND 20FT/LATE(MPH) SE 9 SE 5 SE 9
MIXING HGT(FT-AGL/MSL)5430 6610
TRANSPORT WND (MPH) SE 12 E 7
VENT RATE (KT-FT) 54300 39660
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-052000-
CAYEY MOUNTAIN RANGE-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 20
TEMP (24H TREND) 82 (+1) 69 (-3) 83
RH % (24H TREND) 72 (+1) 98 (0) 66
WIND 20FT/EARLY(MPH) SE 11 SE 8 E 10
WIND 20FT/LATE(MPH) SE 10 E 8 SE 10
MIXING HGT(FT-AGL/MSL)4750 4950
TRANSPORT WND (MPH) SE 17 E 13
VENT RATE (KT-FT) 71250 54450
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-052000-
VIEQUES-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 50 20
TEMP (24H TREND) 87 (+1) 76 (-2) 87
RH % (24H TREND) 63 (-2) 89 (+1) 60
WIND 20FT/EARLY(MPH) SE 16 SE 13 E 13
WIND 20FT/LATE(MPH) SE 14 E 13 E 12
MIXING HGT(FT-AGL/MSL)2770 3760
TRANSPORT WND (MPH) SE 16 E 16
VENT RATE (KT-FT) 38780 52640
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-052000-
CULEBRA-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 10
TEMP (24H TREND) 89 (+2) 77 (-2) 89
RH % (24H TREND) 63 (-4) 93 (+6) 61
WIND 20FT/EARLY(MPH) SE 17 SE 13 E 13
WIND 20FT/LATE(MPH) SE 16 E 13 E 12
MIXING HGT(FT-AGL/MSL)2840 3810
TRANSPORT WND (MPH) SE 16 E 16
VENT RATE (KT-FT) 39760 53340
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-052000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 0 10
TEMP (24H TREND) 91 (+2) 74 (-2) 91
RH % (24H TREND) 52 (0) 89 (+2) 50
WIND 20FT/EARLY(MPH) E 12 G20 E 13 E 14 G23
WIND 20FT/LATE(MPH) SE 12 G20 E 14 SE 17 G25
MIXING HGT(FT-AGL/MSL)4630 4980
TRANSPORT WND (MPH) SE 16 E 18
VENT RATE (KT-FT) 64820 79680
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-052000-
SAINT THOMAS AND SAINT JOHN-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 10
TEMP (24H TREND) 86 (+1) 75 (-2) 86
RH % (24H TREND) 66 (-2) 95 (+3) 64
WIND 20FT/EARLY(MPH) SE 18 SE 13 E 13
WIND 20FT/LATE(MPH) SE 17 E 14 E 12
MIXING HGT(FT-AGL/MSL)2710 3790
TRANSPORT WND (MPH) SE 22 E 16
VENT RATE (KT-FT) 51490 53060
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-052000-
ST CROIX-
515 AM AST TUE MAY 5 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 20 10
TEMP (24H TREND) 87 (+1) 76 (-2) 87
RH % (24H TREND) 66 (-3) 94 (+4) 63
WIND 20FT/EARLY(MPH) SE 16 E 13 E 13
WIND 20FT/LATE(MPH) SE 14 E 13 E 13
MIXING HGT(FT-AGL/MSL)4190 4390
TRANSPORT WND (MPH) SE 18 E 17
VENT RATE (KT-FT) 67040 65850
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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